Try this: my.f <- function(a, b) { x1 <- 2 * 3 x2 <- 3 / 6 x3 <- 4 * 4 / 5 - sqrt(2) y <- get(deparse(substitute(a))) + get(deparse(substitute(b))) return(y) }
my.f(x1, x2) On Fri, Jan 8, 2010 at 4:15 PM, Lisa <lisa...@gmail.com> wrote: > > Dear all, > > I have a question about how to set arguments in my own function. For > example, I have a function that looks like this: > > my.f <- function(a = x1, b = x2) > { > x1 = equation 1 > x2 = equation 2 > x3 = equation 3 > y = a + b > } > > x1, x2, and x3 are temporary variables (intermediate results) calculated > from other variables within the funciton. I want to use two of these three > variables to calculate y, and write R script as below: > > my.f(a = x1, b = x2) > > or > > my.f(a = x2, b = x3) > > The error information shows that: “objects 'x1', 'x2', or 'x3' not found”. > > Can anybody help me solve this problem? Thanks in advance. > > Lisa > > -- > View this message in context: > http://n4.nabble.com/Arguments-of-a-function-tp1009883p1009883.html > Sent from the R help mailing list archive at Nabble.com. > > ______________________________________________ > R-help@r-project.org mailing list > https://stat.ethz.ch/mailman/listinfo/r-help > PLEASE do read the posting guide http://www.R-project.org/posting-guide.html > and provide commented, minimal, self-contained, reproducible code. > -- Henrique Dallazuanna Curitiba-Paraná-Brasil 25° 25' 40" S 49° 16' 22" O ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.